# Half Life of Charge on metal ball.

**Electricity and Magnetism**Level 3

Let a metal ball of Radius \(r\) is placed in infinite homogeneous conducting medium having dielectric constant \(k\) , resistivity \(\rho\) . Let at time t=0 , Q charge is given to ball , then find the **half Life** of the charge present on sphere.

###### Inspired from Raghav's Note

###### It is simple version of that problem.

Yes Answer is independent of Size of ball...